Raspisanie/Zurnal/Date/Repository/GroupRepositoryImpl.cs

using System.Diagnostics;
using Zurnal.RemaDateBase.DateDao;
using System.Text.RegularExpressions;

namespace Zurnal.Data.Repository
{
    [DebuggerDisplay($"{{{nameof(GetDebuggerDisplay)}(),nq}}")]
    public class GroupRepositoryImpl : IGroupRepository
    {
        public List<GroupDao> AllGroup => GroupDao.Name.ToList();

        public IEnumerable<GroupDao> GetAllGroups()
{
    return GroupDao.Name;
}

        public void AddGroup(GroupDao group)
        {
            if (group == null)
            {
                throw new ArgumentNullException(nameof(group));
            }
            GroupDao.Name.Add(group);
        }

        public void UpdateGroupName(int groupId, string name)
{
    var group = GroupDao.Name.FirstOrDefault(g => g.Id == groupId);
    if (group != null)
    {
        group.GroupName = name; 
    }
}

public bool UpdateGroupById(int groupId, GroupDao updatedGroup)
{
    var group = GroupDao.Name.FirstOrDefault(g => g.Id == groupId);
    if (group != null)
    {
        group.GroupName = updatedGroup.GroupName; 
        return true;
    }
    return false;
}

        private static string GetDebuggerDisplay()
        {
            return $"GroupRepository with {GroupDao.Name.Count} groups";
        }

        public bool RemoveGroupById(int groupId)
        {
            var group = GroupDao.Name.FirstOrDefault(g => g.Id == groupId);
            if (group != null)
            {
                GroupDao.Name.Remove(group);
                return true;
            }
            return false;
        }

        public IEnumerable<GroupDao> AllGroups()
        {
            return GroupDao.Name.Select(g => new GroupDao { GroupName = g.GroupName, Id = g.Id });
        }

        public void DeleteGroup(int id)
        {
            var group = GroupDao.Name.FirstOrDefault(g => g.Id == id);
            if (group != null)
            {
                GroupDao.Name.Remove(group);
            }
        }
        public GroupDao FindGroupById(int groupId)
    {
        return AllGroup.FirstOrDefault(g => g.Id == groupId);
    }
}
}